Questions tagged [aeronautical-charts]

For questions relating to navigation charts, but not performance charts.

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How to fix JeppView VFR charts font display

Some of the VFR charts printed by JeppView for Windows incorrectly display various letters on the map. This is especially visible in the NDB/DME designations ("INN", "PAT", "...
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8 votes
3 answers
2k views

What is an "Alternate Airway"?

In What is the number in a closed box right below a victor airway? I noticed: What is an "Alternate Airway"? The radial value placement looks the same to me. The N suffix (after V2) is not ...
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4 votes
1 answer
331 views

What is the number in a closed box right below a victor airway?

I see this little number in my TAC. What is that "42" inside a box right below v208-458? I looked through charts guide to see if I can find that symbol but I couldn't find anything (pretty ...
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1 vote
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Change of absolute ceiling with weight

Let's say an aircraft has an abs ceiling of some value at the start of its cruise and then it consumes some percentage of its fuel during cruise. How will this change the new abs ceiling at the end of ...
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What is the difference between Jeppesen NavData & Digital Terminal Charts?

https://ww2.jeppesen.com/update-cycle-and-effective-dates-schedule/ in the link provided above, Jeppesen NavData has 28day cycle whereas Digital Terminal Charts have 14day cycle Can you provide the ...
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8 votes
2 answers
513 views

Published VHF frequency shown in parentheses on a Sectional Chart. What does this indicate?

Buffalo Niagara International Airport (KBUF) does not have an associated VOR or VORTAC, yet it has a published frequency box that lists a VHF frequency (116.4) in parentheses. Why is this frequency in ...
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2 answers
111 views

What Class Airspace Surrounds TRI Cities? [duplicate]

I'm planning out a "fly the Appalachian Trail" route, and as the AT comes out of the Great Smokey Mountains and heads for its crossing of the Nolichucky river, it puts anyone flying along it ...
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6 votes
1 answer
432 views

What are those flight level values on an airway?

I have downloaded from this link the chart of available airways over the Canary Islands. There, in some of the airways, it says FL660 FL145 As far as I know, ...
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6 votes
1 answer
340 views

Do sectional charts indicate which runways have lighting installed?

KSFF has 3 runways (one in the water, two on land). The sectional shows *L yet only 4L/22R has lights. Is there a trick on the sectional to tell which runway has ...
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4 votes
2 answers
220 views

Why do none of the procedures for EFSA use the SVL VOR-DME?

This is inspired by this question. Looking at all the approach and STAR charts for EFSA in Savonlinna, Finland, they are all RNAV. The Linna VOR-DME is not used for any of them even though it is ...
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4 votes
1 answer
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Are there any "VFR corridors" in the US apart from the one in San Diego?

As far as I can tell, the only VFR Corridor (see AIM 3-5-5(b)) that exists is in San Diego. Is that correct or are there others elsewhere in the US?
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What does the number in degrees indicate on an approach chart?

On the following ILS chart, there is a number 301°. Is the number 301° indicating a track angle, heading or something else?
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3 answers
154 views

Why is the listed sectional for KEIK Cheyenne instead of Denver?

I'm confused why a municipal airport (KEIK in Erie, CO) lists Cheyenne as its appropriate sectional, instead of Denver? It's just over 20nm WNW of KDEN under its outer class bravo shelf and is well ...
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  • 73
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2 answers
220 views

Are Jeppesen Approach, SID charts in Magnetic North or True North?

Usually, when making charts, they use true north up for their charts. However, I found that there is a north arrow in jeppesen approach and sid chart. And.. what north arrow means? Is it indicating ...
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2 answers
156 views

Where can I find VFR approach charts for Italy?

Has anyone a good source of free information for VFR approach charts in Italy? I know that for major airports (e.g. LIMW), https://www.enav.it publishes the charts. However for small airfields (e.g. ...
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3 votes
1 answer
417 views

How to track a flight that I am flying in using the GPS antenna in my mobile phone (without internet)?

I am in India. I booked my first flight ticket a few weeks ago and am very interested in identifying locations as well as geographical and human structures that I will see. I have downloaded many GB's ...
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1 answer
210 views

Questions about items on Jepp charts… [closed]

On a Jeppesen IFR low enroute chart, there's occasionally a different altitude below/next to the MEA with a "T" next to it. (For example: V16 between GACEB and SHAKY, there's a "2900T&...
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2 votes
1 answer
306 views

What is SVC CTC on a chart supplement?

The chart supplement for KSNA mentions the following AIRSPACE: CLASS C svc ctc APP CON svc 1415–0700Z‡ other times CLASS G. I know that SVC means service. I've gathered that KSNA is class C from ...
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1 vote
4 answers
493 views

When did this content first appear in the "Airspace" entry of the "Legend" section of the Airport/ Facilities directory?

When did language like NOTE: AIRSPACE SVC TIMES INCLUDE ALL ASSOCIATED ARRIVAL EXTENSIONS. Surface area arrival extensions for instrument approach procedures become part of the primary core surface ...
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24 votes
3 answers
4k views

Explaining a "Great Circle Route" to young Civil Air Patrol cadets

What would be an easily understood explanation of a "Great Circle Route" for young Civil Air Patrol cadets who are being introduced to aviation and navigation principles for the first time?
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1 vote
3 answers
795 views

What is the definition of Height Above Threshold (HAT)?

I could use some help settling a disagreement about the definition of HAT. So my company uses the word HAT to mean “height of the aircraft above TDZE…at any given distance…at any given time” So as an ...
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1 vote
0 answers
165 views

Why does Fairbanks, AK have a terminal area chart?

It's a relatively uncluttered airspace. Why have a TAC? FAI Terminal Area Chart Arguably, Louisville, KY has at least the same complexity, and since it's UPS's hub it's far more active. Plus, it's a ...
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3 votes
2 answers
206 views

Symbol found on an IFR low chart

I see this symbol on an IFR low chart, can someone tell me what it is?
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2 votes
4 answers
1k views

What type of chart is displayed on ATC radar screens?

I am looking to make an emulation of the radar screen familiar to Air Traffic Controllers, such as the pictures below. I have been having a very hard time finding what type of chart/map is being used. ...
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3 votes
0 answers
113 views

Is it possible to get a digital download of the entire US VFR charts? [closed]

I'm wondering if there is a way to get a download of every US sectional chart stitched together like what you would find on Skyvector when you press "World VFR"? I tried looking on Skyvector,...
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  • 1,318
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0 answers
36 views

Where can I find the position of the MRP (Map Reference Point) for LT6-formatted track data?

I have located a dataset with tracks from January to March 2006 over the Northern California TRACON here (from data.gov). I have taken a look at the files and the "coordinates" seem a bit ...
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-1 votes
1 answer
348 views

What are all the frequencies on the sectional chart?

See the image below of a screenshot of DFW - Dallas Fortworth Sectional chart. There are a multiple frequencies. Based on what I learnt on Sportys so far, a CTAF has a (C), then UNICOM has a UNICOM ...
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12 votes
2 answers
325 views

Where are the "Admitted Aircraft symbols" on Jeppesen VFR aerodrome charts defined?

Jeppesen VFR aerodrome charts depict several symbols for "admitted aircraft". However, even after checking several symbol legends I never found a definition of these symbols. Does anyone ...
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5 votes
1 answer
257 views

Why is there no airport beacon light symbol on the sectional for KSAC, although it does have one?

The star symbol on the top of the airport means airport beacon light but Sacramento Executive (KSAC) has no star symbol but they do have a beacon light and controlled airport as well. Is that ...
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5 votes
0 answers
75 views

Why does the 0 radial on a sectional's VOR appear not to point to magnetic north? [duplicate]

I have been scanning sectional charts and have noticed that the local magnetic declination is always a few degrees off from the 0 radial of VOR's around it. I have been told that the two are supposed ...
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3 votes
1 answer
240 views

Why is KLAX and KSEA depicted class D in IFR low enroute chart? [duplicate]

I was looking at ifr low enroute chart and just figured out that KSEA and KLAX are depicted as class D. Aren't they Class B airports? why do they have D mark?
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2 votes
1 answer
106 views

Is this wording that appears in the legend of the "Chart Supplement" re "airspace" actually used in any entry in the Chart Supplement?

On page 26 of the legend for the February 25 2021 issue of the "Chart Supplement" for the NE region of the US, in reference to airports where Class D airspace converts to surface-level Class ...
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2 votes
1 answer
1k views

What does an "X flagged" VOR mean on an en-route IFR chart?

Source: skyvector.com Maybe I'm looking at the wrong sections / using wrong keywords in the chart user's guide.
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0 votes
0 answers
229 views

Can anyone explain me the ILS Approach Chart of my Airport?

I'm from Lucknow, India (VILK) and recently I experienced my very first CAT IIIB ILS landing at my homebase. Ever since I'm more curious to know about this technology and how it works. I was able to ...
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4 votes
1 answer
213 views

How far in advance of "effective date" are VFR sectional charts usually made available? (US)

In the US, how far in advance of the "effective date" are new editions of VFR sectional charts usually made available? Is the answer different for the paper version and the digital version? ...
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0 votes
1 answer
93 views

Where can I find coordinates for Special Use Airspace (e.g. restricted areas) in the USA? [duplicate]

I am looking for exact specifications for a few prohibited and restricted areas near me so I can plot these areas in other mapping software. I can use sectional charts to estimate, but I am curious if ...
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3 votes
1 answer
832 views

Legend for SkyVector's Sectional Chart outside the US

Does anyone know where can I find the legend for the symbols used by SkyVector's Sectional Chart for places outside the US? The US symbols are well documented but other places (e.g. the United Kingdom ...
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7 votes
1 answer
964 views

What are the different types of take-off minima at the bottom of a Jeppesen airport diagram?

Anyone that could explain the bottom plate, what’s the difference between all those minima?
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10 votes
1 answer
431 views

What do these double Class Bravo airspace floor and ceiling limits mean?

While browsing SkyVector I came across these double Class B airspace limits within the same section (is that what you call it?). I'm wondering what it means and what the difference is between this and ...
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3 votes
1 answer
158 views

Does this chart show a heliport in class D airspace without a control tower?

I was looking at the Los Angeles area on sky vector, and I noticed a tiny little triangular class D area right next to LAX. It shows that the height of the class D goes up to 2,500, but I couldn't see ...
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4 votes
1 answer
132 views

Were planned release dates skipped in 2020 for the VFR sectional charts for Juneau Alaska and Dutch Harbor Alaska?

Were planned release dates skipped in 2020 for the VFR sectional charts for Juneau Alaska and Dutch Harbor Alaska? On February 3 2021, the FAA's "Raster Charts" webpage listed a March 26 ...
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4 votes
1 answer
262 views

What does this symbol mean?

Does anybody know what the icon inside the circle mean ? Found at aviationweather.gov
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2 votes
1 answer
182 views

What are these shaded areas?

What are these shaded areas? I looked in the Jeppesen legend, but couldn't find the answer. Thanks
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0 votes
1 answer
232 views

When I use a plotter to identify a direction from a VOR, what heading or course is it exactly?

When I use my ASA IFR plotter and I'm working off a VOR, what direction am I getting? True course, true heading, magnetic heading, magnetic course?
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8 votes
2 answers
222 views

On old sectional charts, what was the purpose of the domestic ADIZ regions and what was the difference between a "Defense Area" and an "Open Area"?

Looking at an old US sectional chart from 1956, I noticed a few oddities around where Air Defense Identification Zones (ADIZs) were placed. Compared to modern airspace where the US ADIZ is strictly ...
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11 votes
2 answers
221 views

What are the lines of triangles on the DCA RWY 19 River Visual approach chart?

A recent update of a certain flight simulator made me revisit this chart and I had not noticed the lines of triangles (at the Chain Bridge / Roosevelt Bridge etc, but not at the Key Bridge) in a past ...
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  • 211
1 vote
2 answers
136 views

Help reading a FAA departure procedure chart

I was hoping to get a few answers regarding how to read a FAA departure procedure chart. Let's take the JUDTH SEVEN DEPARTURE chart shown below: From what I can tell, it seems that the diagram in ...
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  • 269
6 votes
1 answer
457 views

Why do IFR charts show TACAN paired frequencies when there is no collocated VOR?

The image below shows a low IFR chart with a VORTAC on the right and a TACAN on the left. I understand the VORTAC is labelled with both VOR frequency and TACAN channel so that a civilian user could ...
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  • 588
2 votes
1 answer
161 views

What do EU pilots use for IFR enroute charting (besides Jeppesen)?

Is there something equivalent to FAA IFR enroute charts for the EU, where you can see published routes, holds, minimum altitudes, etc? I can find terminal area procedures in the AIPs, but the ...
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1 vote
0 answers
51 views

Where can I obtain a .KML file for a TRACON’s area of responsibility? [duplicate]

I want an overlay on my moving map for the radar service areas of a TRACON facility. Are there any sites that host this for free?
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